Dave Sr. from SWISCO responded:
December 28, 2023
Thanks for reaching out to us. Looking at your photo, your operator appears to be a match for our 39-188. Note the design and size of the arms that connect to the sash. Your next step should be to carefully review the specs we show below to verify that everything matches up. Please let me know if I can be of any further assistance. Alternate measurement of arm
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